Basic Math Examples

$- 19 l^{- \frac{1}{2}} l^{\frac{1}{2}}$

Step 1

Multiply $l^{- \frac{1}{2}}$ by $l^{\frac{1}{2}}$ by adding the exponents.

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Step 1.1

Move $l^{\frac{1}{2}}$ .

$- 19 (l^{\frac{1}{2}} l^{- \frac{1}{2}})$

Step 1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$- 19 l^{\frac{1}{2} - \frac{1}{2}}$

Step 1.3

Combine the numerators over the common denominator.

$- 19 l^{\frac{1 - 1}{2}}$

Step 1.4

Subtract $1$ from $1$ .

$- 19 l^{\frac{0}{2}}$

Step 1.5

Divide $0$ by $2$ .

$- 19 l^{0}$

Step 2

Simplify $- 19 l^{0}$ .

$- 19$